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Appendix C-Historical Water Quality City of Lathrop
<br /> Consolidated Treatment Facility
<br /> Monitoring and Reporting Program R5-2016-0028-03 Rev3
<br /> KM W-4 continued
<br /> Total
<br /> Date Coliform EC DO ORP Hard- Calcium Magnesium Potassium Sodium Manganese Barium Nickel Zinc Bromide Chloride Fluoride Sulfate
<br /> Sampled pH Bacteria (uS/cm) (mg/L) (mV) TDS(mg/L) mess (mg/L) (mg/L) (mg/L) (mg/L) Iron(mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)
<br /> (per 100 (mg/L)
<br /> mL
<br /> 1/23/2012 &98 NO 3,355 - - 2,280 961 222 99 11 466 ND 1.0 NA NA ND -- 250 ND 770
<br /> 4/26/2012 6.89 ND 2,987 - 134 2,100 831 196 83 9 397 ND 0.73 0.0341 NA ND -- 220 NO 730
<br /> 8/1/2012 6.99 ND 3,251 - -32 2,060 581 147 52 71 530 ND 0.17 NA NA ND -- 540 0.1 460
<br /> 10/29/2012 6.87 ND 2,988 - 99 2,060 723 171 72 23 426 ND 0.46 NA NA ND -- 260 0.2 610
<br /> 2/4/2013 7.09 ND 3,100 - 184 2,360 996 226 105 13 452 ND 0.47 NA NA ND -- 300 ND 760
<br /> 5/6/2013 6.95 2.2 4,929 - 208 3,160 1,140 277 108 80 806 ND 0.18 0.1160 NA ND -- 920 NO 680
<br /> 8/5/2013 7.13 9.2 3,638 0.39 212 2,460 NA NA NA NA 592 ND 0.21 NA NA NA 1.61 570 NA NA
<br /> 11/19/2013 6.98 >23 3,223 0.53 166 2,380 960 225 96 25 481 ND 0.47 0.0391 NA NA 1.23 410 NA 770
<br /> 2/6/2014 7.07 2.2 3,374 1.64 151 2,340 NA NA NA NA 469 0.16 0.13 NA NA NA 1.05 350 NA NA
<br /> 4/28/2014 6.92 ND 3,717 1.26 208 2,460 1,060 248 108 28 540 0.14 0.11 0.0572 NA NA 1.62 500 NA 610
<br /> 8/6/2014 6.90 ND 3,661 2.65 211 2,490 NA NA NA NA 465 0.13 0.40 NA NA NA 3.65 430 NA NA
<br /> 11/4/2014 6.91 ND 3,650 0.43 157 2,520 1,010 233 104 18 471 0.14 0.67 0.0354 NA NA 1.35 400 NA 780
<br /> 2/2/2015 6.93 ND 4,079 0.39 262 2,680 NA NA NA NA 430 0.12 1.11 NA NA NA 0.90 480 NA NA
<br /> 4/27/2015 6.87 NO 4,418 0.84 189 2,910 NA NA NA NA 464 ND 0.62 NA NA NA NA 650 NA NA
<br /> 7/27/2015 6.90 ND 4,063 0.70 148 2,800 NA NA NA NA 443 ND 0.61 NA NA NA 1.49 580 NA NA
<br /> 8/31/2015 6.87 NA 4,040 - - NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
<br /> 10/29/2015 6.97 ND 4,217 0.68 100 2,890 1,250 285 130 12 486 ND 1.97 0.0402 NA NA 1.64 580 NA 680
<br /> 10/29/2015 6.97 ND 4,217 0.68 100 2,980 1,250 285 132 12 485 ND 2.17 0.0395 NA NA 1.78 580 NA 680
<br /> 241/2016 7.0 ND 4,440 0.8 3,0030 NA NA NA NA 496 N1
<br /> 7 2.07 NA,
<br /> NA NA 267 650 NA NA
<br /> 4/2'20,6 728 ND 43. 075 -6 310 1290 297 14 12 527 0.0 223 N NA A 2.48 7 NA 714
<br /> Revised Groundwater Limitations in Groundwater Limitations Com liance Plan,August 1,2016
<br /> 2.2 3,464 1,552 82 806 0.3 5.52 250 915
<br /> 8/8/2016 6.94 ND 4,158 0.26 104 2,890 1,180 272 122 11 450 NO 0.62 NA NA NA 2.37 564' NA 696
<br /> 5/8/2017 7.02 4.5 4,611 0.24 181 3,110 NA NA NA NA 496 NA NA NA NA NA 2.71 750' NA NA
<br /> 11/28/2017 7.46 ND 4,957 0.42 170 3,380 1,470 332 155 11 512 NO 3.6 NA NA NA 3.00 8504 NA 760
<br /> 5/2/2018 693 ND 4,944 1.39 100 3,270 NA NA NA NA 443 NA NA NA NA NA 3.05 829 NA NA
<br /> 11/5/2018 6.70 ND 4,453 0.22 211 2,890 1,240 300 120 10 432 NO 4.6 NA NA NA 2.3 637 NA 624
<br /> 5/1/2019 6.86 ND 6,048 0.52 230 3,890 NA NA NA NA 787 NA NA NA NA NA 3.89 1,050 NA NA
<br /> 10/31/2019 681 ND 6,049 0.21 256 4,120 1,950 452 200 36 683 NO 3.54 NA NA NA 4.56 1,110 NA 894
<br /> 5/12/2020 6:95 ND 4,047 0.05 100 2,630 NA NA NA NA 626 NA NA NA NA NA 2.04 596 NA NA
<br /> 11/4/2020 6.86 79 2,977 0.22 230 2,110 550 137 50 ND 463 ND NO NA NA NA 1.45 451 NA 401
<br /> 5/3/2021 7.00 11 2,731 0.38 131 1,750 NA NA NA NA 444 NA NA NA NA NA 1.03 331 NA NA
<br /> 10/19/2021 6.90 33 2,518 0.36 136 1,520 440 111 40 22 362 ND 0.18 NA NA NA 0.76 279 NA 218
<br /> 10/19/2021 6.90 33 2,518 0.36 136 1,500 430 106 40 21 354 ND 0.18 NA NA NA 0.78 278 NA 220
<br /> 5/2/2022 7.03 ND 2,490 0.97 26 1,500 NA NA NA NA 352 NA NA NA NA NA 0.74 248 NA NA
<br /> 11/1/2022 fi.67 ND 2,443 0.4 492 1,400 340 83 33 14 3fi9 ND 0.13 NA NA NA 0.73 300 NA 236
<br /> 4/3/2023 7.20 ND 2,099 0.86 213.5 1,270 NA NA NA NA 285 NA NA NA NA NA 0.42 233 NA NA
<br /> ND is"not detected".
<br /> NA is"not analyzed".
<br /> "-"data not available.
<br /> Prior to 8/5/2013 samples collected were not filtered.Beginning 8/5/2013 samples were filtered.
<br /> a:Exceeds proposed limitation after de-trending(de-trended results not shown)
<br /> Concentrations in bold exceed the Groundwater Limitation.
<br /> EKI Environment&Water,Inc.
<br /> July 2023 Page 140 of 281 EKI B90088.03
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